Key configuration for a controller



FIG. 1 is a top plan view of a key configuration for a controller showing our new design;

FIG. 2 is a first side view thereof taken from Line 2—2 of FIG. 1, the opposing side view being a mirror image thereof; and,

FIG. 3 is a second side view thereof taken from Line 3—3 of FIG. 1, the opposing side view being a mirror image thereof.

The broken line showing of the boundary of the claimed region is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a key configuration for a controller, as shown and described. 